Emre Yağız Koca is a Turkish videographer, graphic designer, voiceover artist and singer-songwriter who goes by the stage name OKTO MOD. He also plays the cello, piano and guitar. His interest in mysticism and his spiritual personality greatly influenced his music. He has performed artistic works on subjects such as cosmos, deep space, creation, beliefs, humanity, emotions and cognition. His music thematically includes cinematic ambient, new age, experimental, post rock, neo-classical, electronic (downtempo) and ethnic Turkish music elements. He always wanted to combine his expertise in design and photography with his musical career. He directed the promotional films of many important domestic and international brands. He has been a professional recording and stage musician for more than 15 years.